i have been watching this post for some time now as i was curious as how other 60-62 owners mounted the rear bags. My setup involves bags over axle and decided that i needed a pretty large cup to get some height back. with no cup, i'm pretty sure it will lay frame. with a 3 inch cup (used as a spacer), i would get the frame somewhere between 5 to 7 inches off the ground. not sure how it rides yet as i am still putting pieces together.
this pic its hard to tell how low it will go because the bumper hits a step in the back of my garage (dont mind the mess).
here is an older pic of the rear.